[Pharo-project] Extracting a ZipArchive in 2.0

[Vanessa Peña Araya]

Hi,

I want to extract a ZipArchive in Pharo 2.0, as the title says. I'm 
trying to do it with this:

zipArchive
            extractAllTo: aDirectory
            informing: bar
            overwrite: false

I'm trying the new file system but my problem is that ZipArchiveMember 
calls a method called "assureExistence", which does not exist... anywhere.

Has anyone experience something like this?

Thanks,
Vanessa.